Roller jewel setting tool



March 11, 1952 0503 5 7 2,588,8 3)

ROLLER JEWEL SETTING TOOL Filed Dec. 21', 1948 Inventor Frank kabo s, 5r. MWAW M Patented Mar. 11, 1952 UNITED STATES PATENT OFFICE ROLLER JEWEL SETTING TOOL Frank Kobos, Sr., Houston, Tex. Application December 21, 1948, Serial No. 66,434

6 Claims.

This invention relates to novel and useful improvements in tools adapted for use in conjunction with the repair or manufacture of watches or other time pieces.

An object of this invention is to retain a time piece component such as a balance pinion for setting a conventional jewel in the jewel table therein, by means of a jewel setter which includes a shank having a flattened end portion with a slot or opening therein adapted to accommodate a portion of the normal shaft associated with the balance pinion, a block movably mounted on the shank with respect thereto, the block having an opening for accommodation of another portion of the shaft and having an inner surface adapted to clampingly engage the jewel table, and also having a groove at the top portion thereof for accommodation of a jewel, the pinion being retained in the device in such a manner that the jewel may simply be slid in the groove for reception into the conventional opening in the jewel table.

Another object of this invention is to retain the time piece component in the device by a frictional bond set up between the elements of the device and the component and influenced by a spring which constantly urges the block toward the slotted end of the shank.

A further object of this invention is to prevent lateral movement of the block with respect to the slotted end of the shank by means of a guide which is associated with the block and the slotted end of the shank, the guide forming the actual seat for the said spring.

Ancillary objects and features of novel such as simplicity of structure will become apparent to those skilled in the art, in following the description of the preferred form of the invention, illustrated in the accompanying drawings,

7 wherein:

Figure 1 is a fragmentary perspective view of the preferred form of the invention;

Figure 2 is an elevational side view of the device shown in Figure 1, and

Figure 3 is a sectional view taken substantially on the line 3-3 of Figure 2 and in the direction of the arrows.

Considerable skill is required in setting jewels in watch components. Specifically, it requires an extremely skillful person to set a jewel in the jewel table of a balance pinion in setting the roller jewel therein, in the absence of special tools or devices to assist in this operation.

Heretofore devices have been known to facilitate this operation. This invention involves improvements in devices for assisting in setting the jewel in the jewel table of such a watch component.

Various devices such as that shown in Patent No. 1,092,345 which was issued to one J E. Ford on April 7, 1914, showed devices in this general 2 class. In the prior art it has been known to so arrive at this completed operation by the utility of pivots, pivot pins and arms associated therewith and other relatively complicated elements. A material amount of wear has been found to occur in pivotal connections in tools of this nature. Hence, it is another one of the purposes of the invention to supply an apparatus for per forming the function of jewel setting which is totally devoid of pivot pins, pivotal connections and equivalent elements.

In order that a device be commercially feasible, it is essential that it be simplified, rapidly operable and reasonably inexpensive. Hence, it is another one of the purposes of the invention to accomplish those ends.

Referring now more specifically to the draw ings, a handle generally indicated at H] includes a shank l2 which has a flattened end portion I4 and a hand gripping element l6. At the end of the flattened shank there is a slot or opening I8 which extends longitudinally with respect to the shank l2.

There is a block generally indicated at 20 which is attached to the flattened end portion I4 of the shank 12 for movement with respect thereto. The block cooperating with the slotted end of the shank I2 forms a means for frictionally retaining a time piece component therebetween. For illustrative purposes, a balance pinion is utilized. Hence, the balance pinion 22 includes the usual and conventional spokes 24 and hub 26. Fixed to the hub is a jewel table 28, having a jewel opening or aperture 30 therein as is conventional in the art. A shaft has one end 32 extending from one surface of the pinion 22 and the other end 34 extending from the hub 26 and also from the roller jewel table 28.

The block 20 is substantially L-shaped having a leg 38 and a shorter leg 40. The said shorter leg 40 has a pin 42 fixed thereto and extending through a suitable opening provided in the flattened end portion 14 of the shank. This 'pin cooperating withthe pin 44 which is also attached to the shorter leg 40 of the block and which also passes through a suitable opening in the shank flattened portion l4, forms a guide to prevent lateral movement of the block 20 with respect to the shank 12. It will be noted at this point that it is within the purview of theinvention to fix the pins 42 and 44 respectively to the flattened end portion I 4 and have the apertures supplied in the shorter leg of the L- shaped member. This is an alternative structure contemplated in the present device.

The opening I8 is adapted to accommodate the end 32 of the shaft and the flat surface of the end portion 14 of the shank has the pinion body portion 22 seated thereon and in frictional 'engagement therewith. The inner surface 50b! spring 52 which reacts on the shank'and on the block. The structural arrangement ,is the .disposition of one end of the spring, against the side of the flattened end portion Hand the other end of the spring seated on a suitable collar 56. This collar may be fixed to the pin 44.

,An ,openingiiB,isprovidedin the .block 20 .for accomino,dation.of the shaft .end 34. With this .Openinggalignedwith the slot I8, thepinion may bei-diSpQsed-in :thedevicesothat the jewel re- ,eeiying -;opening.,3ll is directly at the end of .a

groorefidwhich is formed in the. top. of thehlock 29,. Jhisgroovehas tapering sides .(Fig. 3, in order {that theconventionally shaped jewel .may -r.es t ther-e111 {and he slid ,iorward toward the opening .,31l,-.whence it may be easily inserted by simply moving the sam.e forward.

i111 eneration, .the watch componentjs simply .inser-tedwby sliding .the movable block .29 away atromgtheflattenedend portionrld of theshank 4.2. Ehemthe'inherent resiliency of the spring 52 pulls the block 2ll.firmly against the watch .cexnponent thereby frictionally retaining it in place within the -.dev-ice. The jewel 62 .is dis- ,posed -.in the -groove .60 and slid forward until it -is.;pr.essedv into the. opening 30 f the roller jewel -.table1Z8. In -.remcmaloi the balance .pinion or .other watch-wcomponent which is utilized, it is only necessary to pull the substantially L-shaped rbloek awayirom the ,flattenedend portion M of ltheeshank and liftrthe ,same from its mounting.

gI-tis ,apparent that variations may be made "without-departing from :the spirit of the inven- .tion.

fiavinggdescrihed-the invention, what iswclaimed =aS:. new is:

31. Agollenjewel-gsettingtool comprising a ban- :dle qhaving a :slot -at one end for passage of a Portion of ashaft-of a time piece componenta :block d-isposed; on said handle adjacent said siot ?and;slida-ble laterally of said handle, ajewel rerceiring groove in-said blockedisposed at substanctiallyarightangles tothe plane of Saidhan-dleadiacen-t :said :slot, said groove opening --upwardly and toward said slot, said block having an openzingcwhich aopens toward said slot for reception so! :another portion of 'the'shaft of the time piece component, the inner side surface of said block being -:,adapted -to irictionally contact the jewel "table of the component, and the inner surface of the handleadjacentrsaid slotadapted to stric- 'tionallyengage another portion of the compo- -nent.

A-roller-jewel setting tool comprisinga hanwdle having a slot atone .end for passage of a portionofa shaft of atime piececomponent, a hlock slidably disposed on said handle adjacent :said slot-and capable of sliding laterally of said handle, a jewel receiving groove in said "block disposed atsubstantiallyright angles to the plane @of ;-said handle adjacent said slot, said groove opening upwardly and toward said slot, said block having an-opening which-opens toward said slot for reception of another portion of the shaft of the time piece component, theinner sidesurface of said-block being adaptedto frictionally contact the 'jewel tableoi the component, and the inner surface of the handle adjacent said slot adapted to frictionally engage another portion of the component, and a spring reacting on said handle and said block constantly urging said block toward said handle adjacent said slot.

3. A rolier jewel setting tool comprising a hanadle having a slot at one end for passage of a portion of a shaft of a time piece component, a block disposed'on said handle adjacent said slot and slidable laterally of said handle, a jewel receiving groove in said block disposed at substantially right anglesto the plane of said handle adjacent saidslot, said groove opening upwardly and toward said slot, said blockhaving an opening which opens "toward said slot for reception ofanother portion of .the shaft of :the time piececomponent, ,theinner. side surface of said block being adapted to frictionally contact the jewel-table of the. com- ,ponenthandlthe innersurface. of the handle ad- .jacentsai'dslotadapted to frictionally engage .another portion pf .the component, a spring reacting-on saidhandleandsaid block constantly urging said block toward said handle adjacent .saidslot, .anda guide. mounted in saidhandleland said block to limit the travel ,of said block with .resp ect to .said handle.

4. For use in. settinga jewel in the table of a balance .pinion havinga shaftprojecting from opposite .faces thereof, a.roller jewel setter comprising a shank havinga .flat end portion with ,an opening therein for accommodation of apart of the shaft, an;elongated.block.having. a jewel ta- -bleeengaging surface, means mounting said block ,ior lateral movementwithrespect to. said shank, :ag-roove extending .toward said opening and located longitudinally .in said .block transverse to thelength of the shank for accommodation of ,thejewelito beinserted in..the jewel table, means reacting .on .said block .and said shank for constantly urging said surface against the jewel table and xfor .pressingsaid pinion against said shank, and said. blockihaving an aperture extending-toward said opening andspaced from said groove .to accommodateanother portion of the shaft.

5. The combination of claim land a guide operatively connected with said shank and said block preventing movement of said-block with respect tovsaid shankin a direction transverse to the longitudinal axis of said groove.

6. The combination of claim 4 and a guide operatively connected with said shank and said block preventing lateralmovement of said block with respect to said shank in a direction .trans verse tothe longitudinal axis of said groove, said block urgingmea-ns including a-spring, said block t.mounting;means including "pins, and-said spring being disposed on-one of said "pins.

KOBOS, SR.

REFERENCES CITED The iollowing references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 654,124 Adams July 24, 1900 869,809 Sloan Oct. 29, 1907 1,092,345 Ford Apr. '7, 1914 1j25'3,1'l6 Aldredge Jan. 8, 1918 1,507,799 Shea Sept. 9, 1924 FOREIGN PATENTS Number Country vDate 231,736 Switzerland. Apr. 15,1944 

